Hydrotherapy tub



FIG. 1 is a top perspective view of a hydrotherapy tub showing our new design;

FIG. 2 is a top plan view thereof;

FIG. 3 is a cross-section taken on line 3--3 of FIG. 2; and

FIG. 4 is a cross-section taken on line 4--4 of FIG. 2. 

The ornamental design for a hydrotherapy tub, as shown. 